/* 顶部导航栏 */
.header {
    height: 60px;
    background-color: #34495e;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    padding: 0 20px;
    justify-content: space-between;
}

.toggle-btn {
    background: none;
    border: none;
    color: #333;
    font-size: 18px;
    cursor: pointer;
    padding: 5px;
}

.user-info {
    display: flex;
    align-items: center;
}

.user-info img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    margin-right: 10px;
}